<template>
    <div>
        <div class="search">
            <input
                class="search-input"
                type="text"
                placeholder="输入城市名或拼音"
                v-model="keyword"
                ref="searchInput"
            >
        </div>
        <div class="search-content" ref="search" v-show="keyword">
            <ul>
                <li
                    v-for="item of list"
                    :key="item.id"
                    class="search-item border-bottom"
                    @click="handleCityClick(item.name)"
                >
                    {{item.name}}
                </li>
                <li class="search-item border-bottom" v-show="isNoData">
                    没有找到匹配数据
                </li>
            </ul>
        </div>
    </div>
</template>

<script>
import Bscroll from 'better-scroll'
import {mapMutations} from 'vuex'
export default {
    name: 'CitySearch',
    props: {
        cities: Object
    },
    data () {
        return {
            keyword: '',
            list: [],
            timer: null
        }
    },
    methods: {
		handleCityClick (city) {
			this.changeCity(city)
            this.$router.push('/')
		},
		...mapMutations(['changeCity'])
	},
    computed: {
        isNoData () {
            return !this.list.length
        }
    },
    watch: {
        keyword () {
            let keyword = this.keyword
            if (this.timer) { clearTimeout(this.timer) }
            if (!keyword) {
                this.list = []
                return
            }
            this.timer = setTimeout(() => {
                const result = []
                for (let key in this.cities) {
                    this.cities[key].forEach((value) => {
                        if (value.spell.indexOf(keyword) > -1 || value.name.indexOf(keyword) > -1) {
                            result.push(value)
                        }
                    })
                }
                this.list = result
            }, 100)
        }
    },
    mounted () {
        this.scroll = new Bscroll(this.$refs.search)
    }
}
</script>

<style lang="stylus" scoped>
@import '~styles/varibles.styl'
.search
  height: .72rem
  padding: 0 .1rem
  background-color: $bgColor
  .search-input
    box-sizing: border-box
    width: 100%
    height: .62rem
    line-height: .62rem
    text-align: center
    border-radius: .06rem
    color: #666
    padding: 0 .1rem
.search-content
    overflow: hidden
    position: absolute
    z-index: 1
    top: 1.58rem
    left: 0
    right: 0
    bottom: 0
    background-color: #eee
    .search-item
        line-height: .62rem
        padding-left: .2rem
        color: #666
        background-color: #fff
</style>
